Rose,
I don't think anybody can tell you how to get through the grieving process. I had a Border Collie/Black Lab, she lived to be 15 years old. I knew her death was coming, but when it came I wanted to reach into my chest and yank my heart out. I go back over the years and see every dog I ever lost: Some hit by cars; some living 8 years, some more. It's like knowing your 90 year old parent is going to go Heaven before long. Mentally you know that but when it happens, no words can describe the heartache. Just enjoy each and every day. Live in the present, enjoying each moment! That's the best any of us can do!!! IMO!
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https://www.amazon.com/author/bonnie.mill-lemke
https://kdp.amazon.com/en_US/bookshelf